Flight Reliability
F9 1262 · Frontier Airlines
Ontario → Denver (ONT–DEN)
89
Pretty Reliable
WanderNerd Reliability Score
- 81%
- Arrive within 15 minutes
- 3 min early
- Average arrival delay
- 0%
- Cancelled
- 16 min early
- Median arrival delay
Based on 64 historical flights. Data through May 2026.
What the data says
The late departure is the smart one here.
F9 1262 departing between 6–9 PM arrived on time 88% of the time, versus 75% between 9 AM–12 PM.
Wednesdays have been rough.
F9 1262 arrived on time 83% of the time on Saturdays and just 60% on Wednesdays. That gap is worth planning around.
Better than the Frontier Airlines network average.
F9 1262 arrived on time 81% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon—(8 flights)
- Tue—(9 flights)
- Wed60%(10 flights)
- Thu—(7 flights)
- Fri—(9 flights)
- Sat83%(12 flights)
- Sun—(9 flights)
- 9 AM–12 PM75%(16 flights)
- 12–3 PM—(2 flights)
- 3–6 PM—(3 flights)
- 6–9 PM88%(43 flights)
75%
May
Sep 89% → May 75% on time
| Month | On-time percentage | Flights |
|---|---|---|
| September 2025 | 89% | 27 |
| November 2025 | 90% | 10 |
| May 2026 | 75% | 16 |
- Departures on time
- 80%
- Diverted
- 0%
- Flights flown
- 64
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 64 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.